CN107345039A - A kind of pump high-performance polytetrafluoroethyl material - Google Patents
A kind of pump high-performance polytetrafluoroethyl material Download PDFInfo
- Publication number
- CN107345039A CN107345039A CN201710346124.9A CN201710346124A CN107345039A CN 107345039 A CN107345039 A CN 107345039A CN 201710346124 A CN201710346124 A CN 201710346124A CN 107345039 A CN107345039 A CN 107345039A
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- parts
- polytetrafluoroethyl
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- gasket seal
- temperature
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/16—Halogen-containing compounds
- C08K2003/162—Calcium, strontium or barium halides, e.g. calcium, strontium or barium chloride
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
- Gasket Seals (AREA)
Abstract
The present invention discloses a kind of pump high-performance PTFE stuffing materials, is made up of the component of following parts by weight：70 75 parts of polytetrafluoroethylene (PTFE), 16 20 parts of methyl trichlorosilane, 8 12 parts of m-trifluoromethylbenzoic acid methyl esters, 10 15 parts of makrolon, 58 parts of benzene guanamine, 14 17 parts of smithsonite, 12 15 parts of calcirm-fluoride, 24 parts of calcium plumbate.Prepare that the processing step of polytetrafluoroethylene sealing gasket piece is simple, and energy consumption is small in the present invention, obtained tetrafluoroethene gasket seal creep-resistant property is good, is not susceptible to the phenomenon of cold flow, greatly extends the application of tetrafluoroethene gasket seal.
Description
Technical field
The invention belongs to pump seal material production field, and in particular to a kind of pump high-performance polytetrafluoroethyl material.
Background technology
Pad is the basic element of centrifugal pump static seal, and the type selecting of pad will be according to the medium of pump, temperature, pressure and corruption
Property etc. factor determine.Select nonmetallic gasket seal individually when temperature and pressure is not high；In when forcing down temperature, from it is nonmetallic with
Metallic combination pad.For non-metallic gasket using the most extensively on pump, its material is respectively paper, rubber and polytetrafluoroethylene (PTFE), its
Middle polytetrafluoroethylene (PTFE) has at a relatively high chemical stability, is resistant to the erosion of many Korrosionsmediums, strong acid, highly basic, Strong oxdiative
Agent, grease, ketone, ether, alcohol etc. to it even if not working at high temperature yet, therefore it has obtained more being widely applied.But
For polytetrafluoroethylmaterial material under load long term, creep is larger, and cold flow easily occurs, therefore is badly in need of a kind of lifting polytetrafluoro
The method of vinyl material performance.
The content of the invention
In order to solve the above problems, the present invention provides a kind of pump high-performance polytetrafluoroethyl material.
The present invention is achieved by the following technical solutions.
A kind of pump high-performance polytetrafluoroethyl material, is made up of the component of following parts by weight：Polytetrafluoroethylene (PTFE) 70-75
Part, methyl trichlorosilane 16-20 parts, m-trifluoromethylbenzoic acid methyl esters 8-12 parts, makrolon 10-15 parts, benzene melamine two
Amine 5-8 parts, smithsonite 14-17 parts, calcirm-fluoride 12-15 parts, calcium plumbate 2-4 parts, preparation method include following operating procedure：
（1）Polytetrafluoroethylene (PTFE), makrolon are added in homogenizer, 80-100 mesh sieves are crossed after stirring 30-40min；（2）Water chestnut zinc
120-140 mesh is crushed after ore deposit, calcirm-fluoride, calcium plumbate mixing；（3）By step（1）And step（2）The powder mixing of gained
Afterwards, then thereto methyl trichlorosilane, m-trifluoromethylbenzoic acid methyl esters, benzene guanamine are added, continues to be stirred
After even, pour into the mould of gasket seal, pressurize on a hydraulic press is molded, and 2-3mm gasket seal embryo material is made；（4）Will be close
Gasket embryo material is put into sintering furnace, and the temperature in stove is risen into 415 DEG C with 200 DEG C/h programming rate, is incubated 4-5 hours
Afterwards, after the temperature in stove finally being down into 200 DEG C with 30 DEG C/h rate of temperature fall, its Temperature fall is allowed, finished product.
Specifically, active constituent content is 98.5% in the calcium plumbate.
Specifically, above-mentioned steps（3）The pressure that middle hydraulic press applies is 25MPa, and the time of pressurize is 20min.
The beneficial effects of the invention are as follows：
Prepare that the processing step of polytetrafluoroethylene sealing gasket piece is simple, and energy consumption is small in the present invention, obtained tetrafluoroethene sealing gasket
Piece creep-resistant property is good, is not susceptible to the phenomenon of cold flow, greatly extends the application of tetrafluoroethene gasket seal.Its
In, makrolon is with after polytetrafluorethylene copolymer, effectively reducing the contact angle of gasket surface, improving the work of gasket surface
Property, and then adding pad in use, the greasing substance of addition is to its lubrication protection effect；Smithsonite, calcirm-fluoride, height
After calcium plumbate synergy, the heat-resistant anti-fatigue degree of obtained pad is effectively improved, obtained pad can be caused in high temperature ring
There is preferable compression creep and heat conductivility in border, and then extend service life of the pad in hot environment；Methyl
Trichlorosilane, m-trifluoromethylbenzoic acid methyl esters, benzene guanamine synergy after, to a certain extent destroy polytetrafluoro
Helical structure inside ethene so that some is exposed to outside to its internal carbon carbon bond, reduces teflon gasket
Chemical stability, but be so that rebound performance, the counter-bending and compression performance of obtained teflon gasket have obtained pole
Big lifting, effectively avoid the generation of teflon gasket cold flow.
Embodiment
Following examples are used to illustrate the present invention, but can not be used for limiting the scope of the present invention.The reality used in embodiment
The condition of applying can be for further adjustments according to the condition of producer, and unaccounted implementation condition is usually conventional laboratory conditions.
Embodiment 1
A kind of pump high-performance polytetrafluoroethyl material, is made up of the component of following parts by weight：70 parts of polytetrafluoroethylene (PTFE), methyl three
16 parts of chlorosilane, 8 parts of m-trifluoromethylbenzoic acid methyl esters, 10 parts of makrolon, 5 parts of benzene guanamine, 14 parts of smithsonite, fluorine
Change 12 parts of calcium, 2 parts of calcium plumbate, preparation method includes following operating procedure：（1）Polytetrafluoroethylene (PTFE), makrolon are added high
In fast mixer, 80 mesh sieves are crossed after stirring 30min；（2）120 mesh are crushed after smithsonite, calcirm-fluoride, calcium plumbate mixing；（3）
By step（1）And step（2）After the powder mixing of gained, then methyl trichlorosilane, m-trifluoromethylbenzoic acid are added thereto
Methyl esters, benzene guanamine, continue after being uniformly mixed, and pour into the mould of gasket seal, and pressurize on a hydraulic press is molded,
2mm gasket seal embryo material is made；（4）Gasket seal embryo material is put into sintering furnace, with 200 DEG C/h programming rate by stove
Temperature rise to 415 DEG C, after insulation 4 hours, after the temperature in stove finally is down into 200 DEG C with 30 DEG C/h rate of temperature fall, allow
Its Temperature fall, finished product.
Specifically, active constituent content is 98.5% in the calcium plumbate.
Specifically, above-mentioned steps（3）The pressure that middle hydraulic press applies is 25MPa, and the time of pressurize is 20min.
Embodiment 2
A kind of pump high-performance polytetrafluoroethyl material, is made up of the component of following parts by weight：73 parts of polytetrafluoroethylene (PTFE), methyl three
18 parts of chlorosilane, 10 parts of m-trifluoromethylbenzoic acid methyl esters, 13 parts of makrolon, 7 parts of benzene guanamine, 16 parts of smithsonite,
13 parts of calcirm-fluoride, 3 parts of calcium plumbate, preparation method include following operating procedure：（1）Polytetrafluoroethylene (PTFE), makrolon are added
In homogenizer, 90 mesh sieves are crossed after stirring 35min；（2）130 mesh are crushed after smithsonite, calcirm-fluoride, calcium plumbate mixing；
（3）By step（1）And step（2）After the powder mixing of gained, then methyl trichlorosilane, m-trifluoromethyl benzene first are added thereto
Sour methyl esters, benzene guanamine, continue after being uniformly mixed, and pour into the mould of gasket seal, on a hydraulic press pressurize into
Type, 2mm gasket seal embryo material is made；（4）Gasket seal embryo material is put into sintering furnace, will with 200 DEG C/h programming rate
Temperature in stove rises to 415 DEG C, and after being incubated 4.5 hours, the temperature in stove finally is down into 200 DEG C with 30 DEG C/h rate of temperature fall
Afterwards, its Temperature fall is allowed, finished product.
Specifically, active constituent content is 98.5% in the calcium plumbate.
Specifically, above-mentioned steps（3）The pressure that middle hydraulic press applies is 25MPa, and the time of pressurize is 20min.
Embodiment 3
A kind of pump high-performance polytetrafluoroethyl material, is made up of the component of following parts by weight：75 parts of polytetrafluoroethylene (PTFE), methyl three
20 parts of chlorosilane, 12 parts of m-trifluoromethylbenzoic acid methyl esters, 15 parts of makrolon, 8 parts of benzene guanamine, 17 parts of smithsonite,
15 parts of calcirm-fluoride, 4 parts of calcium plumbate, preparation method include following operating procedure：（1）Polytetrafluoroethylene (PTFE), makrolon are added
In homogenizer, 100 mesh sieves are crossed after stirring 40min；（2）140 mesh are crushed after smithsonite, calcirm-fluoride, calcium plumbate mixing；
（3）By step（1）And step（2）After the powder mixing of gained, then methyl trichlorosilane, m-trifluoromethyl benzene first are added thereto
Sour methyl esters, benzene guanamine, continue after being uniformly mixed, and pour into the mould of gasket seal, on a hydraulic press pressurize into
Type, 3mm gasket seal embryo material is made；（4）Gasket seal embryo material is put into sintering furnace, will with 200 DEG C/h programming rate
Temperature in stove rises to 415 DEG C, and after being incubated 5 hours, the temperature in stove finally is down into 200 DEG C with 30 DEG C/h rate of temperature fall
Afterwards, its Temperature fall is allowed, finished product.
Specifically, active constituent content is 98.5% in the calcium plumbate.
Specifically, above-mentioned steps（3）The pressure that middle hydraulic press applies is 25MPa, and the time of pressurize is 20min.
Comparative example 1
Smithsonite, calcirm-fluoride, calcium plumbate composition are not added, and remaining composition is identical with being embodiment 1.
Comparative example 2
Methyl trichlorosilane, m-trifluoromethylbenzoic acid methyl esters, benzene guanamine composition are not added, and remaining composition is with being to implement
Example 2 is identical.
Experiment：Gasket seal is made with the method provided in an embodiment and comparative example respectively, first measures at room temperature each
Tensile strength, compression ratio, rebound degree and the creep relaxation rate of group gasket seal, then each group pad is put into 120 DEG C of height again
After depositing 15min in warm equipment, the tensile strength for testing each group gasket seal immediately, compression ratio, rebound degree and creep pine are taken out
Relaxation rate, test result is as shown in table 1, table 2：
Polytetrafluoroethylmaterial material the performance test results before table 1 heats
| Project | Tensile strength/MPa | Compression ratio/% | Rebound degree/% |
| Embodiment 1 | 16.0 | 32.6 | 94.6 |
| Comparative example 1 | 16.8 | 31.1 | 94.2 |
| Embodiment 2 | 15.8 | 33.1 | 95.0 |
| Comparative example 2 | 17.4 | 27.2 | 88.5 |
| Embodiment 3 | 15.7 | 33.5 | 94.3 |
Polytetrafluoroethylmaterial material the performance test results after table 2 heats
| Project | Tensile strength/MPa | Compression ratio/% | Rebound degree/% | Creep relaxation rate/% |
| Embodiment 1 | 15.7 | 31.0 | 92.8 | 29.4 |
| Comparative example 1 | 13.1 | 25.4 | 85.2 | 36.8 |
| Embodiment 2 | 15.3 | 31.8 | 93.4 | 28.5 |
| Comparative example 2 | 16.6 | 19.2 | 82.1 | 39.7 |
| Embodiment 3 | 15.2 | 32.1 | 93.5 | 28.1 |
From the data in the embodiment 1 and comparative example 1 in table 2, smithsonite, calcirm-fluoride, calcium plumbate can cause poly- four
PVF pad keeps excellent performance in hot environment, improves the heat-resisting ability of pad, by the reality in Tables 1 and 2
Apply example 2 and comparative example 2 understands that methyl trichlorosilane, m-trifluoromethylbenzoic acid methyl esters, benzene guanamine can be effective
The rebound performance of polytetrafluoroethylmaterial material, counter-bending and compressibility are lifted, can effectively avoid teflon gasket cold flow from showing
The generation of elephant.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (3)
1. a kind of pump high-performance polytetrafluoroethyl material, it is characterised in that be made up of the component of following parts by weight：Polytetrafluoroethyl-ne
Alkene 70-75 parts, methyl trichlorosilane 16-20 parts, m-trifluoromethylbenzoic acid methyl esters 8-12 parts, makrolon 10-15 parts, benzene three
Paracyanogen diamines 5-8 parts, smithsonite 14-17 parts, calcirm-fluoride 12-15 parts, calcium plumbate 2-4 parts, preparation method include following operation
Step：（1）Polytetrafluoroethylene (PTFE), makrolon are added in homogenizer, 80-100 mesh sieves are crossed after stirring 30-40min；（2）
120-140 mesh is crushed after smithsonite, calcirm-fluoride, calcium plumbate mixing；（3）By step（1）And step（2）The powder of gained mixes
After conjunction, then methyl trichlorosilane, m-trifluoromethylbenzoic acid methyl esters, benzene guanamine are added thereto, continue to be stirred
After uniformly, pour into the mould of gasket seal, pressurize on a hydraulic press is molded, and 2-3mm gasket seal embryo material is made；（4）Will
Gasket seal embryo material is put into sintering furnace, and the temperature in stove is risen into 415 DEG C with 200 DEG C/h programming rate, is incubated 4-5 hours
Afterwards, after the temperature in stove finally being down into 200 DEG C with 30 DEG C/h rate of temperature fall, its Temperature fall is allowed, finished product.
2. according to a kind of pump high-performance polytetrafluoroethyl material described in claim 1, it is characterised in that the plumbic acid
Active constituent content is 98.5% in calcium.
3. according to a kind of pump high-performance polytetrafluoroethyl material described in claim 1, it is characterised in that step（3）In
The pressure that hydraulic press applies is 25MPa, and the time of pressurize is 20min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710346124.9A CN107345039A (en) | 2017-05-17 | 2017-05-17 | A kind of pump high-performance polytetrafluoroethyl material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710346124.9A CN107345039A (en) | 2017-05-17 | 2017-05-17 | A kind of pump high-performance polytetrafluoroethyl material |
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| Publication Number | Publication Date |
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| CN107345039A true CN107345039A (en) | 2017-11-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710346124.9A Pending CN107345039A (en) | 2017-05-17 | 2017-05-17 | A kind of pump high-performance polytetrafluoroethyl material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504007A (en) * | 2019-01-10 | 2019-03-22 | 骆玲 | A kind of chemical pump rubber packing material |
| CN113480816A (en) * | 2021-06-09 | 2021-10-08 | 株洲时代新材料科技股份有限公司 | Preparation method and application of high-oil-resistance polytetrafluoroethylene composite material |
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| CN102276950A (en) * | 2011-05-18 | 2011-12-14 | 湖州松华橡塑有限公司 | Polytetrafluoroethylene (PTFE) composite material sealing ring with high temperature resistance and low creep, and preparation method thereof |
| CN102585406A (en) * | 2012-01-06 | 2012-07-18 | 广州机械科学研究院有限公司 | Microporous oil-containing self-lubricating polytetrafluoroethylene (PTFE) material for sealing and preparation method and application thereof |
| CN105647079A (en) * | 2016-04-06 | 2016-06-08 | 苏州甫众塑胶有限公司 | Composite seal material for waterproof pipeline and preparation method of material |
| CN106223508A (en) * | 2016-09-21 | 2016-12-14 | 云南昆钢钢结构股份有限公司 | The frictional slip pendulum aseismatic bearing of a kind of wear resistant corrosion resistant and processing technique thereof |
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2017
- 2017-05-17 CN CN201710346124.9A patent/CN107345039A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102276950A (en) * | 2011-05-18 | 2011-12-14 | 湖州松华橡塑有限公司 | Polytetrafluoroethylene (PTFE) composite material sealing ring with high temperature resistance and low creep, and preparation method thereof |
| CN102585406A (en) * | 2012-01-06 | 2012-07-18 | 广州机械科学研究院有限公司 | Microporous oil-containing self-lubricating polytetrafluoroethylene (PTFE) material for sealing and preparation method and application thereof |
| CN105647079A (en) * | 2016-04-06 | 2016-06-08 | 苏州甫众塑胶有限公司 | Composite seal material for waterproof pipeline and preparation method of material |
| CN106223508A (en) * | 2016-09-21 | 2016-12-14 | 云南昆钢钢结构股份有限公司 | The frictional slip pendulum aseismatic bearing of a kind of wear resistant corrosion resistant and processing technique thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109504007A (en) * | 2019-01-10 | 2019-03-22 | 骆玲 | A kind of chemical pump rubber packing material |
| CN113480816A (en) * | 2021-06-09 | 2021-10-08 | 株洲时代新材料科技股份有限公司 | Preparation method and application of high-oil-resistance polytetrafluoroethylene composite material |
| CN113480816B (en) * | 2021-06-09 | 2022-08-16 | 株洲时代新材料科技股份有限公司 | Preparation method and application of high-oil-resistance polytetrafluoroethylene composite material |
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Application publication date: 20171114 |